Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rigidbuilding.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 00:42:58 UTC · ↺ Refresh
MX Hostnames
- us1-smtp-mx2.titanhq.com
- us1-smtp-mx1.titanhq.com
MX Priorities
- us1-smtp-mx2.titanhq.com: 0
- us1-smtp-mx1.titanhq.com: 0
A / AAAA Records
- 172.66.43.80 (no PTR)
- 172.66.40.176 (no PTR)
- 2606:4700:3108::ac42:28b0 (no PTR)
- 2606:4700:3108::ac42:2b50 (no PTR)
Mail Server IPs
- 18.218.73.72 ↩ us1-smtp-mx1.titanhq.com
- 18.116.252.179 ↩ us1-smtp-mx1.titanhq.com
- 18.225.12.231 ↩ us1-smtp-mx1.titanhq.com
SOA Record
Raw SOA
kurt.ns.cloudflare.com dns.cloudflare.com 2399356855 10000 2400 604800 1800
Primary NS (mname)
kurt.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399356855
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
kurt.ns.cloudflare.com
paloma.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms26470368
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for rigidbuilding.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits